Putty-trimming machine



. A. HUGHES PUTTY TRIMMING MACHINE 3 Sheets-Sheet 1 Filed Sept. 15 1922 A. HUGHES PUTTY TRIMMING MACHINE Feb. 26 1924.

s Sheets-Sheet 2 Filed Sept. 15

3 Sheets -Sheet 5 Feb. 26, 1924. v

A. HUGHES PUTTY TRIMMING MACHINE Filed Sept. 15.

& a NW :ffllllllrllltiflil h Patented Feb. 26, 1924.

PAT?

ARTHUR, HUGHES, OF LOS ANGELES, CALIFORNIA.

PUTTY-TRIMM ING MACHINE.

Application filed September 15, 1922.

To all whom it may concern Be it known that I, ARTHUR HUGHES, a citizen of the United States, residing at Los Angeles, inthe county of Los Angeles and State of California, have invented new and useful Improvements in Putty-Trimming Machines, of which the following is a specification.

My invention relates to putty trimming apparatus, and a purpose of my invention is the provision of an apparatus of this character by means of which blades mounted for reciprocating movement are employed to effect the cutting of a single sheet of leather or other suitable material in such manner as to form a complete putty. Mly invention embodies longitudinall disposed blades for forming the vertical e ges of the putty and curved blades for forming the upper and lower ends of the putty or the horizontal edges, and in such manner as to form the rounded lower corners of the putty.

Although I have herein shown and described only one form of putty trimming apparatus embodying my invention, and will point out the novel features thereof in claims, it is to be understood that various changes and modifications may be made without departing from the spirit of the invention and the spirit and scope of the appended claims.

In the accompanying drawings,

Figure 1 is a view showing in front elevation and partly in section one form of putty trimming apparatus embodying my invention;

Figures 2 and 3 are vertical sectional views taken on the lines 22-and 33, respectively, of Figure 1.

Referring specifically to the drawings, in which similar reference characters refer to similar parts, my invention, in its present embodiment, comprises a hollow pedestal'15 upon which is secured a frame including a longitudinally extending means 16 and vertically extending standards 17 and 18. The standards 17 and 18 are bifurcated at their upper ends to provide a socket or bracket in which projections 19 are adapted to seat for supporting a form 20 upon the frame. The standard 18 is pivot-ally mounted upon the beam 16, as indicated at 21, to allow of a swinging movement of the standard to permit removal of the form 20. To prevent accidental disconnection of the corresponding projection 19 from the standard Serial No. 588,352.

18, a pin 22 is extended through the bifurcated end of'the standard and the projection for locking the two together.

tions thereof slidably mounted in suitable openings formed in the beam 25, with the terminals of the yoke bolted or otherwise seadjustably supported by the means shown in Figure 2. These blades 28 are mounted to occupy parallel spaced positions and to be adjusted to vary the space between the blades, su-ch blades being employed for forming the vertical or longitudinal edges of the putty. These blades are mounted through the medium of the yoke 26 for vertical reciprocating movement, and to effect such movement an arm 29 is secured to the beam 25, and pivoted to this arm at the point indicated at 30 is a lever 31. The lever is connected to the yoke 26 through the medium of a link 32 so that by rocking the lever about the pivot 30 vertical movement of the yoke 26 is effected to impart a corresponding movementto the carriage 27 and the blades 28.

For the purpose of cutting the upper end of the putty a split annular blade 33 is mounted in encircling relation with respect to the form 20 in the manner clearly shown in Figure 2-. This blade 33 is tapered in cross sectionto provide a cutting edge 34 at its inner periphery which is adapted to penetrate the sheet of leather sustained upon the form 20 in effecting the forming of the upper end of the putty. Adjacent the ends of the blade 33 ears 35 are formed, and pivotally connected to these ears are rods 36 mounted in bearings 37 formed on brackets 38. As will be understood, it is necessary that the blade 33 be made extremely thin in order to allow the necessary constriction of same in effecting the cutting of the leather, and to this end the blade is mounted for movement within a guard 38 which is of the same contour as the blade and of U shape in cross section. This guard 38 is rigidly sustained by means of arms 38 secured to the frame 24. The sides of the guard are adapted to brace the blade to prevent lateral bending of the latter and to thereby insure that the cutting edge of the blade engages the leather at the proper point. Bell crank levers 39 are fulcrumed at the point indicured to a carriage 27 upon which blades are cated at 40, and the long arms of these levers are connected to the rods 36 by pin-and-slot connections 41. The short arms of the levers are bifurcated to engage pivot pins 42 mounted on the upper ends of a U-shaped yoke 43. As clearly shown in Figure 2, this yoke 43 is provided with an opening 44 in which a cam 45 is adapted to work. This cam is eccentrically keyed to a shaft 46 j ournaled in bearings 47 and provided at one end with an arm 48 (Figure 1) which is connected to an actuating lever or treadle 49 through the medium of the connecting rod 50. The treadle 49 is pivoted at the point indicated at 51, and a spring 52 is connected to the treadle to normally urge the latter to the elevated position shown in Figure 2. In this position of the treadle the yoke 43 is likewise elevated, and for guiding the yoke in its movement a pin 53 is s'idably mounted in the beam 16.

From the foregoing arrangement it will be clear that when the treadle 49 is depressed from the position shown in Figure 2, the cam 45 will be rotated to effect an elevation of the yoke 43. As the yoke 43 is moved upwardly, the bell crank levers 39 are rocked to cause inward movement of the rods 36, thereby constricting the blade 33 to cause its cutting edge to penetrate the sheet of leather supported on the form 20. When pressure upon the treadle 49 is removed, the spring 52 operates to return the pedal and, consequently, the blade 33 to normal position.

For cutting the straight edge of the lower end of the putty, a blade 54 mounted for vertical movement within a guide yoke 55 is secured upon the beam 16. The blade 54 is provided with a semi-circular cutting edge 56 which conforms in contour to the adjacent portion of the form 20. This blade 54 is provided with an opening 57 in which works a cam 58 keyed eccentrically to a shaft 59 mounted in bearings 60. The shaft 59 is provided with an arm 61 which is connected to a treadle 62 by means of a connecting rod 63. The treadle 63 is pivoted at the point indicated at 64 and connected to this treadle is a spring 65 which normally urges the latter to the elevated position shown in Figure 3. When the treadle 62 is depressed against the tension of the spring 65 cam 58 is operated to force the blade 54 upwardly to cause its cutting edge to penetrate the sheet of leather sustained upon the form 20, thereby forming the lower edge of the putty. V

For forming the curved corners of the putty, curved blades 66 are provided. These blades as shown in Figure 3 are fixed to rods 67 mounted in bearings 68, and provided with pins 69 working in slots 70 of levers 71. The levers 71 are pivoted at the points indicated at 72 and are connected to a rod 73 through the medium of links 74. The rod 7 3 is mounted for vertical movement within a frame 23, and the upper end of the rod is operatively connected to an actuating lever 75 by means of links 76.

The lever 75 is fulcrumed at the point in dicated at 77 upon a standard 78 secured to the frame 23.

By depression of the lever 75 from the position shown in Figure 3, it will be clear that the rod 73 is forced downwardly to actuate the links 74 and the levers 71 to force the rods 67 inwardly and downwardly, thereby moving the blades 66 in the direction of the form 20 to cause their curved cutting edges to penetrate the sheet of leather in forming the rounded corners. It is to be particularly noted that the lengths of the blades 28, 54 and 66 are such that their confronting ends are in contiguous relation with each other to form a continuous cut.

For the purpose of forming putties of various diameters, the blades 28 are adjustably mounted, as previously described. The blades 66 are also adjustably mounted by inovably mounting the bearings 68 within slots 79 of plates 80 secured to the frame 23. The bearings 68 may be maintained in any adjusted position by means of screws 81 mounted in the manner shown in Figure 3, so as to engage the hearings to limit the downward movement of the latter. The pin-and-slot connections 69 and 70 allow of the adjustment of the bearings 68, as will be understood, and by virtue of this adjustment the blades 66 can occupy various positions with respect to the form 20 so as to penetrate the sheet of leather at various points in forming the rounded corners.

I claim as my invention:

1. A trimming apparatus for putties comprising a form upon which a sheet of material is adapted to be sustained, a split annular blade mounted in encircing relation to the form, and mechanism for constricting the blade to cut the sheet of material in forming the upper end of a putty.

2. A trimming apparatus for putties comprising a form upon which a sheet of material is adapted to be sustained, cutting means for forming the longitudinal edges of a putt a second cutting means for forming the rounded corners of the putty, and means for adjusting the cutting mechanisms for the purpose described.

3. A trimming apparatus for putties comprising a form upon which a sheet of material is adapted to be sustained, blades for forming the longitudinal edges of a putty, curved blades for forming the rounded corners of a putty, mechanisms for actuating the blades to effect cutting of the material, means for adjusting the first blades with relation to each other, and means for adjusting the second blades so as to cut the sheet of material at various points.

4. In a putty trimming apparatus, blades for forming the longitudinal edges of a putty, a split annular blade for forming the upper transverse edge of the putty, a semicircular blade for forming the lower transverse edge of the putty, curved blades for forming the rounded corners of the putty, and mechanisms for actuating all of said blades.

5. In a putty trimming apparatus, blades for forming the longitudinal edges of a putty, a split annular blade for forming the upper transverse ed e of the putty, a semicircular blade for forming the lower transverse edge of the putty, curved blades for forming the rounded corners of the putty, mechanisms for actuating all of said blades, and adjusting means for the curved blades and the first blades, said mechanisms being operable irrespective of the adjustment of said blades.

6. In a putty trimming apparatus, blades for forming the longitudinal edges of a putty, a split annular blade for forming the upper transverse edge of the putty, a semicircular blade for forming the lower transverse edge of the putty, curved blades for forming the rounded corners of the putty, foot operated means for actuating the split annular blade and the semi-circular blade, and hand operated means for actuating the curved blades and the first blades.

7. In a putty trimming apparatus, blades for forming the longitudinal edges of a putty, a split annular blade for forming the upper transverse edge of the putty, a semicircular blade t'or forming the lower transverse edge of the putty, curved blades for forming the rounded corners of the putty, cam operated means for actuating the semicircular blade and the split annular blade, and lever operated means for actuating the first blades and the curved blades.

In testimony whereof I have signed my name to this specification.

ARTHUR HUGHES. 

